Water heater repair in Plano, TX

Plano's water: Lavon Lake and the NTMWD system

The City of Plano does not treat its own water. It is one of the founding member cities of the North Texas Municipal Water District, which draws most of its raw supply from Lavon Lake on the East Fork of the Trinity River, supplemented by other reservoirs the district has added over the decades, including Lake Texoma, Jim Chapman Lake, Lake Tawakoni and the newer Bois d'Arc Lake. Treatment for Plano happens at the district's large plant complex in Wylie, and the city then distributes the water through its own mains, pump stations and elevated tanks.

NTMWD water is moderately hard, so Plano tanks collect sediment at a steady but not alarming pace. The more noticeable quirk is the district's annual temporary switch from chloramine to free chlorine, usually in the spring, when residents may smell more chlorine at the faucet. It does not harm a water heater, but it sometimes prompts calls about odd smells from the hot side that are really coming from the supply.

Rotten-egg odor that appears only on the hot taps is a different story. That smell usually comes from a reaction between the anode rod and bacteria in a tank that sat unused, a common complaint after a family returns from a long summer trip to a house in Deerfield or Russell Creek.

Attic heaters in Plano's 1980s and 1990s homes

Plano's population boom brought large neighborhoods of brick two-story homes in west and central Plano: Deerfield, Hunters Glen, Kings Ridge, Willow Bend, Preston Meadow, Russell Creek and many more. Builders in that era often placed one or two gas water heaters in the attic, sometimes side by side above the garage, sometimes tucked over a hallway near the bedrooms. Larger homes frequently have two tanks, one serving each end of the house.

An attic heater needs a drain pan with a line that discharges somewhere visible, plus a solid platform, a clear walkway from the attic access and a light at the unit. Many original installs met the code of their day but now show cracked pans, drain lines that were never connected, or walkways made of loose plywood. When a 25-year-old attic tank finally leaks, the water often finds a ceiling over a living room or staircase before anyone notices.

Older East Plano and the Old Town area near Haggard Park include one-story ranch homes from the 1960s and 1970s, where the heater usually sits in the garage or a hall closet. Newer far-west neighborhoods near Legacy and the Dallas North Tollway have a mix of attic tanks, garage tanks and tankless units mounted on exterior walls.

Summer attics and the 2021 freeze

A Plano attic in July can run far hotter than the outdoor temperature, and a gas heater that lives there endures years of that heat. Gas controls, plastic drain pans, flexible water connectors and the insulation on wiring all age faster than they would in a garage. The heater still has to draw combustion air from that same hot, dusty space.

Winter Storm Uri in February 2021 showed the other risk. Days of temperatures well below freezing, combined with rolling power outages from the statewide grid emergency, froze water lines in Plano attics and exterior walls across the city. Many homeowners found burst supply lines at the heater itself, a split relief valve line, or an exterior-mounted tankless unit that cracked once its freeze protection lost power.

Since then, a lot of Plano owners have added pipe insulation in the attic and learned where their main shutoff is. That preparation is worth finishing if you have not: the next serious freeze will hit the same attic piping in the same way.

The problems plumbers see most in Plano

• Attic tanks leaking through ceilings because the pan cracked or the drain line was never run to daylight.
• Two aging tanks in one house with the second failing a year or two after the first.
• Flex connectors and relief valve lines that split during the 2021 freeze and were patched rather than replaced.
• Smelly hot water in homes left empty for weeks, traced to the anode and stagnant water.
• Tankless units on exterior walls with freeze damage or error codes after outages.
• Undersized attic access that forces a smaller replacement tank or a relocation.

Typical water heater prices in Plano

Plano quotes tend to sit at or slightly above the wider Dallas area because so many jobs are attic replacements. Replacing both tanks in a two-heater home on the same visit can save on trip and permit costs.

Permits and licensing in Plano

Plano homeowners can check any plumber against the Texas State Board of Plumbing Examiners roster, whose online search shows whether a master or journeyman license is active. The City of Plano's Building Inspections Department handles heater permits, and its inspectors look at the gas connection, venting clearances, the relief valve discharge, and for attic heaters the pan, drain, platform and walkway.

In Texas the permit for plumbing work is pulled by the licensed plumber rather than the homeowner in most cases, so the company named on your Plano contract should be the one whose license appears on the permit. Neighboring Allen, Frisco, Richardson and Murphy each run their own inspection offices.

Should the attic heater stay in the attic?

When a Plano attic tank fails, owners usually choose between three options. A like-for-like replacement in the attic is the least expensive, provided the attic opening is large enough for the new tank, since modern high-efficiency tanks are often wider than the ones they replace. Moving the heater to the garage removes the ceiling risk but means new water, gas and vent runs. A tankless unit on an exterior wall frees the attic entirely but needs a larger gas line and, after 2021, careful attention to freeze protection.

Homes with two attic tanks sometimes replace them with a single high-output tankless unit, though long pipe runs to the far bedrooms can make hot water slow to arrive. A recirculation pump or keeping one tank near the bedrooms are ways around that.

Simple habits for Plano heaters

Once a year, climb up with a flashlight and look at the attic heater's pan. Standing water, rust stains or mineral crust in the pan mean the tank or a fitting is already weeping. Trace the drain line and make sure it leaves the house somewhere you will see it, such as over a patio or beside the driveway.

Drain a few gallons from the tank each spring to pull out sediment from NTMWD water, and replace the anode every several years. Before winter, insulate exposed attic supply lines and know where the outdoor main valve or the meter box key is. Atmos Energy supplies natural gas across Plano, so a rotten-egg gas smell at the heater is a reason to leave the house and call Atmos from outside.

Around Plano

Allen, Frisco, Richardson, Wylie and McKinney also receive NTMWD water, so hardness and treatment are similar, though each city maintains its own pipes and permits. Carrollton and The Colony sit partly in Denton County with other suppliers. Murphy and Parker to the east include larger lots and some newer homes with tankless or garage heaters rather than attic installs.

Water heater questions from Plano